Expansion joint device



Sept. 18,1934. 5 j LAND 1,973,946

EXPAN JOIN Filed Dec. 21. 19:53 3;,1

-1| 1* WM n. w- I '5 I EJ YEF EXPANSION JOINT DEVICE Filed Dec. 21. 1952 2 Sheets-Sheet 2 i i l I 15 l I &

Patented Sept. 18, 1934 hairs!) STATES eeics 14 Claims.

This invention relates to an improved expansion joint device adapted for use in concrete roads or other concrete constructions wherein spaces or grooves are required between sections of the 8 road to receive fillers or cores which arevadapted to be supported in position, before the pouring of concrete, by improved expansion joint devices which are positioned longitudinally on the subgrade of a concrete road in spaced relation in a transverse row, said devices including anchoring means and connecting members whereby the concrete sections on the opposite sides of the joint grooves are connected in amanner to permit iii adjacent concrete sections to be guided in theirilt movements toward and away from one another due to temperature changes.

It is an object of this invention to provide an improved expansion joint device adapted to .be positioned to project across a concrete road expansion joint groove to connect adjacent sections of the road to serve as a means for preventing vertical shifting of the sections and also acts to guide said sections in their movements toward or away from one another due to temperature changes.

It is also .an object of this invention to provide an improved expansion joint device for use in concrete roads for connecting road sections on opposite sides of expansion joint groove by means of a connecting bar slidable in suitable guide units embedded in the concrete sections by the aidoi anchoring members engaged through channel guides for the connecting bar.

It is furthermore an object of this invention to as provide an expansion joint device consisting of channel guide members adapted to be embedded in adjacent sections of a concrete construction to serve as guides for a connecting bar which extends across an expansion groove provided between the concrete sections and formed by a filler or core adapted to be held in position during the pouring of the concrete by suitable supports forming part of the channel guide members.

it is an important object of this invention to provide an improved type of expansion joint device, a plurality of which are adapted to be positioned longitudinally on a road subgrade in spaced relation in a transverse row where an expansion joint is required, said devices including guide sections and anchoring means whereby the guide sections may be embedded in adjacent concrete sections of a road on opposite sides of the expansion joint with said guide sections being connected by connecting bars with which the guide sections are adapted to have relative movesection oi the concrete (Cll. 94-18) ment when the concrete sections on opposite sides of the expansion joint are expanded due to tem perature changes to compress an expansion joint filler held in position by holding members forming a part of the devices.

Other and further important objects of this invention will be apparent from the disclosures in the specification and the accompanying drawings.

The invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described.

On the drawings:

Figure 1 .is a fragmentary top plan view of a concrete road having expansion joint devices etc-- bodying the principles of this invention, arranged in a transverse row to provide an expansion joint in the road.

Figure 2 is an'enlarged fragmentary top plan view of the expansion joint device. Figure 3 is a fragmentary isometric View of one end of the device.

Figure d is a fragmentary longitudinal vertical section of the deviceshown in Figure 2 illustrating an expansion joint filler in dotted lines supported in position by the device. c

Figure 5 is an enlarged fragmentary vertical road taken on line if-V of Figure l.

Figure 6 is a similar sectional view illustrating a modified form of an expansion joint device embedded in the subgrade and in the concrete forming the upper section of the road.

As shown on the drawings:

The reference numeral l indicates a' concrete road subgrade upon which the improved expan W sion joint devices are adapted to be supported to be embedded-in concrete forming the upper portion of the road. The upper portion of the road is divided longitudinally by a center joint 2 and by spaced expansion joints 3 and contraction joints 4. The expansion joints and contraction joints are so positioned that they divide the upper portion'of the road intoa plurality of concrete sections 5.

The present invention relates more particu= lady to the means for providing'the expansion joint 3' transversely of the road on opposite sides of the'center joint 2. The expansion joint unit or mechanism comprises an expansion joint filler or core 6 which extends from the outer margin of the road transversely to one side of the center joint 2 and is adapted to be supported in position by a plurality of expansion joint devices arranged in spaced relation in a transverse row upon the subgrade l with each of said expansion joint de- 11w Milt illustrated in Figure 1.

' Each of the expansion joint devices comprises a connecting bar '7 which is positioned to extend across the expansion joint flller receiving groove 8 as illustrated in Figure 2. The expansion joint device comprises two sections each of which consists of a plate 9 having the middle portion thereof formed to provide a channel 10 into which one end of the connecting bar 7 projects. integrally formed on one end of the channel 10 is a closure flap or end plate 11 which is adapted to be bent at right angles as illustratedin Figure 3 to close one end of the channel. Integrally formed on the opposite end of the channel portion 10 is an extension which is bent outwardly at right angles to the main plate of the channel to form a filler supporting or holding plate or flange 12. As clearly illustrated in Figure 4, the holder plates or flanges 12 are positioned apart to contact opposite sides of the filler or core 6 to hold the same in an upright position transversely of the road. The filler or core 6 has the lower margin thereof notched at intervals to permit the same to seat over the connecting bars 7 which extend across the expansion joint.

Each of the expansion joint sectionsor units 910 is provided with slots at 13 in the creases where the flanges of the channel portion join the plates 9. The slots 13 are arranged opposite one another to permit a metal anchor strap to be projected through the slots 13 to form a retaining or holder strap 14 at substantially the middle portion of the strip while the ends of the strip are bent upwardly around the sides of the channel and then are inclined outwardly to form anchoring arms 0 blades 15.

As illustrated in Figure 5, the expansion joint device is positioned on the sub-grade with the plates 9 contacting the top surface of the subgrade while the anchoring blades or arms 15 project upwardly and outwardly allowing the central portion 14 of the strip or strap to span the channel to serve as a support or retaining means for holding the connecting bar 7 in place. As shown in Figure 2, the two sections 9 are spaced apart to provide the filler receiving opening 8 thereby providing an arrangement whereby the filler or core 6 is adapted to be held in position by means of the holder plates 12. The closure flaps or end plates 11 normally are in the plane of the main plate of the channel and are adapted to be bent downwardly into closed position as illustrated in Figure 3 after the bar has been inserted in positlon.

With a transverse row of the expansion joint devices placed in position upon the road subgrade 1, the expansion joint fillers are inserted in place. The concrete for forming the upper portion or crown section of the road is now poured upon the sub-grade to completely embed the expansion joint devices and the fillers or cores 6 allowing the upper edges of the flllers or cores to be positioned substantially at the top surface of the road.

When the concrete sections 5 of the road are expanded due to temperature changes the sections 5 on opposite sides of the flller or core 6 are permitted to expand toward one another to cause compression of the flller or core and allowing the channel sections of the device to be moved toward one another and relative to the connecting bar 7 which extends across the expansion joint and acts to obviate vertical shifting of adjacent sections of the road.

It will thus be notedthat the expansion joint vices running longitudinally of the road as clearly devices are connected between adjacent sections of a concrete road and span the expansion joint. The channeled sections of each of the devices are anchored in the concrete sections by means of the anchor straps or arms 15 so that the channeled sections are adapted to be moved toward and away from one another with the expansion and the contraction of the road sections on opposite sides of the expansion joint due to temperature changes.

Figure 6 illustrates a modified adaptation of the expansion joint device in which the channeled sections are inverted so that the channeled portions thereof are adapted to be seated in grooves provided in the sub-grade 1 thereby allowing the plate portions 9 to lie flat upon the top surface of the sub-grade. The anchor straps are engaged through the slots 13 so that the middle or channel portions of the straps engage around the bottom of the channel plate 10 allowing the anchoring blades or arms 15 to project upwardly to be embedded in the concrete forming the sections 5. To prevent the concrete from contacting the connecting bar 7, a protecting strip or plate 16 is engaged in the inverted channel portion of the expansion joint device section.

For the purpose of holding the fillers or cores in position transversely upon the sub-grade, the ends of the straps or plates 16 at the expansion joint are bent upwardly to provide holding plates or flanges 17. The filler or core may thus be positioned between the holding flanges 17 to be supported in position thereby.

It will of course be understood that various detais of construction may be varied through a wide range without departing from the principles of this invention, and it is therefore not the purpose to limit the patent granted hereon otherwise than necessitated by the scope of the appended claims.

I claim as my invention:

1. An expansion joint device comprising an expansion joint filler, a pair of channeled sections, means thereon for supporting the filler in position between the sections, a connecting bar in the channeled sections and spanning the filler receiving space provided between the sections, and anchoring means engaged in the channeled sections and serving to act both as retaining means for the connecting bar and as means for locking the channeled sections in portions of the body of a concrete construction in which the expansion joint device is used.

2. An expansion joint device comprising a plurality of slotted guide members for positioning within concrete sections disposed on opposite sides of a road expansion joint, a connecting bar slidably disposed within said guide members and projecting across theexpansion joint, and strap members laced through the slots in said guide members for anchoring the same in the road sections.

3. An expansion joint device comprising a pair of guide members adapted to be disposed in road sections disposed on opposite sides of an expansion joint, conn'ecting means slidably disposed in said guide members and extending across the expansion joint, means formed on said guide members for supporting an expansion joint filler in position prior to the forming of the road sections, and means engaged through the guide members for anchoring the same within the con-,

crete sections of the road.

4. A road expansion joint device comprising a pair of guide members, separated from one another, means formed thereon for supporting an expansion joint filler in position between the guide members, a connecting member slidably engaged in said guide members and projecting across the space dividing the same, and resilient straps engagedwith the guide members for anchoring the same in adjacent concrete road sections and also serving as supports for the connecting member.

,5. A road expansion joint device comprising a pair of guide members, means formed thereon 'for supporting an expansion joint filler in position, a bar slidably disposed within the guide members and extending across the space provided for the expansion joint filler, and a plurality of strap members engaged through the guide members with the ends of said strap members positioned to serve as anchoring means for anchoring the guide members in adjacent concrete sections of the road disposed on opposite sides of the expansion joint tiller.

6. A road expansion joint device comprising a pair of slotted guide sections separated from one another, a bar engaging said guide sections and projecting across the space between the same, means projecting through the slots for anchoring the guide sections in concrete road sections disposed on opposite sides of an expansion joint, and

flanges integrally formed on the guide sections for supporting an expansion joint filler in position between said guide sections.

7. A concrete road expansion joint device comprising a pair of plates having guide channels formed therein, a bar disposed in said guide channels, means for closing the outer ends of the guide channels, supporting members formed on the inner ends of the guide channels for supporting an expansion joint filler in position between the inner ends of the guide channels, and a plurality of "members projecting through the guide channels and having the ends thereof positioned to serve as anchoring means for securing the plates and said guide channels secured in concrete road sections disposed on opposite sides of the expansion joint.

8. A concrete road expansion joint device comprising a pair of plates, channel members formed thereon, a connecting bar slidably disposed in said channel members, means engaged transversely through said channel members and beneath said bar for anchoring the plates in adjacent sections of a concrete road, and supporting means .forming a part of the channel members for holding an expansion joint filler supported in position on the road sub-grade prior to the forming of the concrete road sections.

9. A concrete road expansion joint device comprising a pair of guide units including means laced therethrough and projecting upwardly therefrom for anchoring the same in concrete road sections disposed on opposite sides of a road expansion joint, a connecting member engaged with said guide units and projecting from one road section into the other, 'and means on said guide units for supporting an expansion joint filler in position between the guide units.

10. A concrete road expansion joint device comprising a pair of slotted guide units, .a plurality of members engaged in the slots of said guide units for anchoring the units in adjacent concrete sections ofa road, means in said guide units supported on said members and projecting from one concrete section into an adjacent section, and supports formed on adjacent ends of the guide units for holding an expansion joint filler supported in position supported on said means and separating the guide units.

11. An expansion joint device comprising a pair of spaced plates, each of said plates having a channel formed therein provided with slots at the juncture of the channel with the plate, expansible and contractible means between the plates, a bar member engaged in the channels and projecting beneath the means separating said plates, and anchoring members projecting through said slots transversely of the channels.

12. An expansion joint device comprising a pair of spaced plates having grooved sections formed therein with slots provided at the junctures of the grooved sections and the plates, at filler supported between said plates, a member in said grooved sections projecting beneath the filler, and anchoring means projecting through said slots beneath the member.

- 13. In an expansion joint device of the class described a filler supporting unit comprising a slotted plate having a channel section formed therein, end members formed on the ends of the channel section and projecting in opposite directions from one another, a bar member in said channel section, and anchoring straps project-- ing through the slotted plate beneath the bar member.

14. Injanexpansion joint device a filler supporting unit comprising a grooved plate having spaced slots therein, a member in said grooved plate beneath the member.

's'ramntr n. CLELLAND. 

